Tankless Water Heater Repair in Duncanville

- Expert Repairs on All Tankless Units
Continuous flow, on-demand and hybrid water heater service
- Lasting Restoration of Hot Water Delivery
Get back to clean, on-demand hot water ASAP
- Trusted Techs + a Workmanship Warranty
Certified work plus a warranty on parts and labor
- Get Same Day Service!
- Family Owned and Operated
- Fix Your Issue 100% Guaranteed

Tankless Water Heater Repair, On Your Terms
Duncanville deserves better Tankless Water Heater Repair solutions
If your tankless water heater in Duncanville is acting up, Mother Modern Plumbing's expert team can quickly diagnose and repair the issue, providing you with reliable hot water.
Have you noticed inconsistent water temperatures, or does your water heater take longer to heat up than it used to? Are you experiencing error codes or unusual noises?
At Mother Modern Plumbing, we understand the inconvenience and frustration that can come with tankless water heater problems. With nearly a century of combined plumbing experience, our licensed experts have the knowledge and tools to get your hot water flowing again efficiently. We're committed to transparency and precision in every job, ensuring you understand the problem and the solution.
Our commitment to flat-rate pricing, expert plumbers, and fast, permanent repairs sets us apart. Our team is dedicated to providing clear, reliable service.
Here are some common signs that you may need a tankless water heater repair:
- Inconsistent water temperature
- Reduced hot water flow
- Error codes displayed on the unit
- Unusual noises coming from the water heater
Don't let a malfunctioning tankless water heater disrupt your comfort. Contact Mother Modern Plumbing today, and experience the peace of mind that comes with knowing your plumbing is in the hands of trusted professionals.

Fast Tankless Water Heater Repair: within 24 hours
In Duncanville, our experienced team provides Tankless Water Heater Repair to restore your system and get your hot water running again fast. We also offer Tankless Descale to protect your system from the damaging effects of mineral buildup.
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What are the most common tankless water heater repair types?
A majority of tankless water heater repairs (especially in DFW) involve one of these six key issues:
- Descaling due to mineral buildup
- Ignition system issues (blocked sensors)
- Blockages of vents
- Faulty flow sensors
- Leaks from a damaged heat exchanger or valves
- Damaged gas flexes and closed valves (gas units)
How often should I descale my tankless water heater?
Perform tankless water heater descaling once every 6-12 months in most areas to eliminate mineral buildup in the system.
If you live in areas with extremely hard water- such as Dallas-Fort Worth- consider decaling your on-demand hot water heater every 6-8 months (roughly twice a year). Limescale is particularly hard on tankless units in our area.
How often should I replace the inlet filter on a tankless water heater?
This depends on the water quality in your area and your personal water usage rate. Most homeowners should replace the inlet filter every 6 months.
If your home uses a lot of water, or if you live in regions with extremely hard water (like North Texas), check your inlet filter every 4 months. Increased use and excessive mineral scaling have significant impact on the filter's lifespan.









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